Congrats on the new-to-you RV and welcome to iRV2.
I can't help with the questions, but want to invite your attention to the Forest River Owners Forum...
See:
Forest River Owners Forum - iRV2 Forums
Many people limit checking this site to a few forums - because as you can tell, it is rather LARGE. So, questions in a specific Forum might get a more targeted audience.
Best luck